Product Catalog 產品目錄                                                     
        
Binoculars & Spotting scope 雙筒望遠鏡 及 觀景鏡 

入 門 推 介

7x50

10x50

10
入 門 推 介

Objective size: 50mm
Magnification: Options of 7x, 10x
Prism: BAK4
Optic coating Broadband fully multi-coated or multi-coated on objectives
Long eyes relief: Yes - 10x WP only
Waterproof: 10x WP only
Body length: 17.5-18.5cm
Field of view at 1000m:
7x-119m
10x WP - 114m
Exit pupil diameter:
7x-6.5mm
10x WP - 5mm
Exit pupil distance:
7x-13mm
10x WP - 18mm
Minimum focus distance: 6-9m
Net weight: 0.5 kg except for
10x WP 1.0 kg
Packing: Soft nylon case
Gross weight: 0.6 kg except for 10x WP 1.2 kg

Oberwerk 7X50 & 10x50mm Wide-angle Waterproof Binocular

50mm binoculars is "all around binoculars". They're suited for backpacking, birding, boating, camping, hiking, hunting, nature study, sporting events, travel, and more. And, it's good for the astronomy beginners - you don't have to use it with a tripod or "mount".

The 50mm binoculars comes with the magnification options of 7x, 10x, etc.

All 50mm binoculars come with Bak-4 prism, broadband multi-coating on the objectives, rugged rubberized metal bodies, all-glass lenses, right ocular diopter adjustment, brass 1/4-20 tripod adapter threading, case, caps, and strap.

Porro prism 10x50 waterproof wide angle with broadband multi-coating on objectives are popular as a multipurpose binoculars in U.S.

8X42WPIII $580 SPECIAL PRICE 入 門 推 介
Lighter in weight than WPII for 250gm !


8x42 WPIII/ 10x42 WPIII
(nitrogen filled)
Objective lens dia: 42 mm
Magnification 8x, 10x
Prism: Roof prism Bak4
Optic coating: Broadband fully multi-coated
Waterproof: Yes
Shockproof: Yes No
Internal focus: Yes
Triplet Objective: Yes
Long eyes relief: Yes
Field of view at 1000m: 8x-133m
10x-107m
Exit pupil dia.: 8x-5.3 mm 10x-4.2 mm
Exit pupil distance: 18.2mm
Minimum focus distance: 8x-6 m 10x-8 m
Net weight: 8x-700gm 10x-750gm
Packing: Soft nylon case


8x42 & 10x42 Triplet WPIII

Waterproof binoculars are dry nitrogen filled and sealed against moisture and fog. The roof prism 8x42 and 10x42 are waterproof with broadband multi-coating on objectives have dominated the optical market for hunting, birding and boating in Europe.

Starting 2005, 8x42 and 10x42 WPIII are available. They are different from WPI in:

* Triplet objective (compared with the doublets objective of WPI )
* Internal focus (compared with the external focus of WPI version)
* Better phase coated
* Shockproof (drop it from 5 meters high, the prism is still dead-on)
* All metal-design, so they are heavier than WPI verson.

All the waterproof binoculars come with Bak-4 prism, broadband multi-coating on the objectives, rugged rubberized metal bodies, all-glass lenses, right ocular diopter adjustment, brass 1/4-20 tripod adapter threading, case, caps, and strap.


20x80 TRIPLET
**Limited quantity**
Objective size: 80mm
Magnification: 11x, 20x
Prism: BAK4
Optic coating: Broadband fully multi-coated or broadband multi-coated on objectives
Long eyes relief: Yes
Body Length: 33 cm
Body coverings: Rubberized
Field of view:
20x-3.0°
Exit pupil diameter: 20x-4mm
Exit pupil distance: 20x-19mm
Minimum focus distance: 20x-15m
Net weight 80mm triplet: 2.7 kg
Packing 80mm triplet: black hard case

Heavy duty metal L-adapter

Ideal for mounting any size binocular with 1/4-20 threading to a 1/4-20 tripod head. Very strong metal casting, with rubber insert on bottom, which prevents adapter from swiveling on tripod head.

20x80 triplet 三分離式

broad band multi-coated
寬頻多層鍍




80mm standard and lightweight (the longer one as shown in the pic.) binoculars are basically 15x70, but with 80mm objectives. The lightweight 80mm are in the exact same style of 15x70: rubberized body, the same Bak-4 prism and full broadband multi-coatings. 80mm lightweight are much lighter in weight (standard 2.0 kg, lightweight 1.8 kg) than the 80mm binoculars made by Japanese or German manufacturers, and so some people may find they can even handhold it for some time in the daylight. The 80mm standard with triplet objective (three-element objective) design and then it has a center post with higned rings. The triplet objective can improve the sharpness and color correction. Just as 15x70, Chinese 80mm triplet and lightweight binoculars represent the great value: high quality and unbeatable price.




7x50 & 10x50, individual focus with extra large eyepiece and enhance coating BAK4 prism
7x50MS
10x50MS
Maginification
7
10
Aperture
50
50
Apparent field of view
52°
66°
Actual field of view (degree)
7.5°
6.8°
Field of view (width x distance)
52m @ 300m
48m @ 300m
Exit pupil (mm)
7.1
5.0
Eye relief (mm)
25
22
Optical coatings (all air to glass surface)
Fully multi-coated
Fully multi-coated
Prism
BAK4
BAK4
Weight (kg)
1.2
1.2

7X50MS 軍用規格雙筒鏡
military specification


Ergonomic design, shockproof & waterproof
 

Produly presents: High quality, waterproof, shockproof, fully multi-coated, rubber armoured binoculars 7x50MS, 10x50MS, 10.5x70MS & 15x70MS

Grand Eye Scientific Company is sourcing for the best binoculars manufacturer after the famous Meade binoculars, which was also made in China. These factories are all based in Kunming, Yunnan Province. Kunming is China's production and export base for binoculars, telescopes and other optical instruments. There are a number of state-owned factories in Kunming which used to only produce for military use. After transition to market economy, a lot of experienced engineers and sales staff just leave these state-owned factories and start their own private optical instruments factories.

These privately-owned factories inherit all the asset of state-owned factories: the rich experiences in optics industry for more than 40 years, rigid quality control system, highly-skilled low-cost human resources, and all the used-to-be-only-for-army binoculars models-now totally oriented for civilian market.

These factories have the yearly production capacity of 800,000 units of binoculars ranging from 21mm compact to 120mm giant. They have better R & D and are the first who produced and supplied the popular models like 7X50M, 15x70, 20x80 & 25x100 to the international market. For example, in U.S. market, Oberwerk Corp. is the exclusive distributor for the giant binoculars (56mm up)

Price of binoculars

全新高質素
雙筒望遠鏡, 現己接受預訂
gesc@netvigator.com



25x100FB ASTRONOMICAL

Objective size: 100mm
Magnification: 25x
Prism: BAK4
Optic coating: Broadband fully multi-coated
Long eyes relief Yes

Body Length: 45 cm
Body coverings: painted white finish
Field of view: 2.8°
Exit pupil diameter: 4 mm
Exit pupil distance: 18mm
Minimum focus distance: 38m
Net weight: 4.6 kgs
Packing: set in polyethylene box, then loaded into a soft nylon case

25x100 FB is for the amateur astronomers who are experienced in using binoculars. The major difference between 25x100 FB and the 70, 80 and 90mm binoculars is the prism housing. The 25x100 FB's has better prism mount so that the front prism and rear prism are in much better alignment. Also, with the 25x100 FB prism housing, the objetive tubes are in perfect parallel positioning with eyepieces. The point is that the better collimation, the minimum prism light cutoff and more even focus are achieved.

Another major improvement is the blackened inside of the objective tubes. It doesn't use the common anti-dust paper with sticky oil to trap the dust and dirt - this makes the inside surfaces reflective and shiny. Instead, all internal surfaces of 25x100 FB are sprayed with a non-reflective black paint before assembly to decrease the reflection and increaser the contrast. This feature is only see in a few very high-end German and Japanese models.

25x100 FB has a rubberized all-metal body with hinged central bar as the mount. The design itself is more waterproof and shock-resistent than most of the giant binoculars. It's individual focus, 4.6 kgs in weight and 44.6 cm long. It's fully multi-coated and has accessible collimation screws.

Oberwerk 25x100IF

New 25x100 binoculars comes with aluminum case






Pop up eye cap, rigid focusing knob, fully multi coated lens and BAK4 prism
8x32 WP bino.
8x32
Maginification
8
Aperture
32
Apparent field of view
52°
Number of lens
8 elements
6 groups
Field of view (width x distance)
188m @ 1000m
Exit pupil (mm)
20
Waterproof
Nitrogen gas filled
Optical coatings (all air to glass surface)
Broadband Fully multi-coated
Prism
Roof
Weight (gm)
430

SPECIAL OFFER


Ergonomic design 8x32WP
Ultra-portable, waterproof with front & rear cap
Soft carry case
入 門 推 介
 


Pop up eye cap, rigid focusing knob, fully multi coated lens and BAK4 prism
8x25 WP bino.
8x25
Maginification
8
Aperture
25
Apparent field of view
52°
Number of lens
8 elements
6 groups
Field of view (width x distance)
126m @ 1000m
Exit pupil (mm)
14
Waterproof
Nitrogen gas filled
Optical coatings (all air to glass surface)
Broadband Fully multi-coated
Prism
Roof
Weight (gm)
365

SPECIAL OFFER


Ultra-portable, shockproof & waterproof
Soft carry case
 

10.5x70M Military Standard Binoculars comes with aluminum case, strap, and tripod adapter


Individual focus, rigid design, rubber armoured & nitrogen filled usable in adverse weather
, durable and maintenance free, 25mm extra long eye relief
Limited quantity offer
Our price: HK$2,550

price in U.S. HK$2,925. 25% saving

Astro-Physics Premium binoculars (PB105X70, PB15X70)

Tripod adapter with 1/4-20 thread adapt to all camera tripod

Military standard binoculars, extremely durable, all weather conditions, a great tool for nature observer, scientist and bird watcher, 7x50 & 8x40 Marine



8x40 marine binoculars with extra large BAK4 prism, shock resistant, build to military standard
Model
8x40Marine
7x50Marine
Maginification/ Aperture
8x/ 40mm
7x/ 50mm
Optical coatings (all air to glass surface)
Broadband fully multi-caoted
Broadband fully multi-caoted
Military specification waterproof
1 m deep water for 1 hour
1 m deep water for 1 hour
Actual field of view (degree)
8.3°
7°
Working temperature C)
-40~+50
-40~+50
Shock resistant
Yes
Yes
Eye relief (mm)
19
24
Minumum focusing distance (m)
3m
3m
Prism
Extra large BAK4
Extra large BAK4
Weight (kg)
1.0
1.2

 

8x40 marine binoculars with extra large BAK4 prism, shock resistant, build to military standard

 


Individual focus




Hard leather case comes with the binoculars






15x70

Objective size: 70mm
Magnification: 11x
Prism: BAK4
Optic coating: Broadband fully multi-coated or broadband multi-coated on objectives
Long eyes relief: Yes
Body length: 28 cm
Body coverings: Rubberized
Field of view at 1000m: 11x-84m
Exit pupil diameter: 11x-6.4mm
Exit pupil distance: 11x-24mm
Minimum focus distance: 10m
Net weight: 11x-1.6kg
Packing Soft nylon case
Gross weight (including outside packing) 1.8 kg


Oberwerk 15x70 fully-multicoated giants

Omicron 11X70 & 15X70 FMC Giant

One of the most popular binoculars is the 70mm series binoculars.

The 70mm binoculars install Bak-4 prism, full broadband multi-coating, rubberized metal bodies, all-glass lenses, right ocular diopter adjustment, improved "slow-focus", brass 1/4-20 tripod adapter threading, case, caps, and strap. And, with only 1.6 kg in weight, China made 70mm is one of few hand-held giant binoculars for serious deep-sky viewing.

Besides, it gives high definition and color rendition for terristerial viewing.



 

 



ETX spotting scope
可能是最完美的 9 公分折反射鏡



ETX-90 (1.4kg) & ETX-125 (2.5kg) spotting scope
 
Hi resolution photo taken by Meade 8x22 Capture View untouched

How to select the right binocular 如何選擇適當的雙筒望遠鏡 (courtesy from TAS) 

有些人或許會覺得:看到一些天文同好們玩著大枝小枝昂貴的望遠鏡, 雙筒望遠鏡是有點玩具似的東西,其實不然,不管他有多

猛的炮,每一個業餘的天文同好都應該有一枝不錯的雙筒望遠鏡,而如果你和小潔一樣是一位剛入門的同好,而預算又不是很多

時,小潔倒建議你別把全部的錢一股腦投到鏡筒或赤道儀上,而應該買一枝不錯的雙筒望遠鏡和本星圖及幾本初學者的好書(更別

忘了來小潔的只要天文看看)

[
雙筒望遠鏡的結構]
一般市面上雙筒望遠鏡的結構,可不只是兩枝折射鏡裝在一起那麼簡單哦,現在的雙筒望遠鏡主要可以由稜鏡的型式分成2種類

--屋頂式稜鏡(roof-prism)普羅式稜鏡(porro-prism) 或許你會問:那一種比較好?只要是對雙筒望遠鏡了解的人都會告訴你

"普羅式的",沒錯,在其他條件都一樣的情況下,普羅式的稜鏡的確比屋頂式更能夠提供你較為明亮.銳利.的影像

[普羅式雙筒望遠鏡] Porro prism binoculars
普羅式又可細分為德國式(German)和美國式(American) 

[屋頂式稜鏡與普羅式稜鏡的分別]

屋頂式稜鏡,當然是長得像屋頂形狀的稜鏡(廢話!),有一層內面鍍上鋁(或其他金 

屬,但通常是鋁)以反射由物鏡接收進來的光 ,而有一小部分的光便在這個時候損

失掉了,而造成了較暗的影像;相反地,品質夠好的普羅式稜鏡不需要反射的鏡面

便可以完全反射所收集到的光.而另一個屋頂式的缺點便是其高昂的價格,一部分

的原因起因於其在安裝時所需要的高精密度,就我們觀測星空而言,就算是最好.

最貴的屋頂式望遠鏡,其影像的品質仍然比不上同口徑的普羅式雙筒望遠鏡

[你該知道關於雙筒望遠鏡的常識]
[放大倍率&口徑]

所有的雙筒望遠鏡上至少都該有2個數字,像:7╳50或是11╳70等..要了解你的雙筒望遠鏡,當然要先知道這兩個數字所代表的意義

7

50

"7"代表這枝雙筒望遠鏡的放大倍率是7倍

 

"50"代表這枝雙筒望遠鏡的口徑是50(mm)


很多人都有這種觀念:以為放大倍率愈大就表示這枝雙筒望遠鏡愈好,其實並不盡然,愈大的放大倍率雖然可讓你在望遠鏡裡看到愈

大的東西,而伴隨而來的則是較為昏暗的影像,當你想買雙筒望遠鏡時,最重要的便是考量你的用途及預算,來選擇一枝適當口徑&

率的雙筒

[光瞳徑(Exit Pupil)]
在這裡就得先提到一個名詞:光瞳徑(Exit Pupil)所謂的光瞳徑,就是口徑(mm)除以倍率,也就是進入雙筒望遠鏡的光從目鏡射出時

的直徑,如果一枝雙筒望遠鏡的光瞳徑愈大,就表示你可以從這雙筒裡得到愈明亮的影像,而人類剛出生的時候的瞳徑大約為7mm,

以雙筒望遠鏡的光瞳徑最好做到7mm,正可以得到最明亮的影像,如果再大反而有一部分的光無法進入瞳孔,反而會使影像變得模糊

,如果你買雙筒的用途只是用來看看棒球賽或賞鳥,當然用到這望遠鏡的時候都是白天陽光大的時候,小潔就會建議你買枝光瞳徑

不用很大的雙筒,以換得較大的倍率,看起球來當然也會比較清楚啦,但我們這裡談的是天文觀測用的雙筒,要觀測的東西常是昏暗的

星體,所以雙筒的光瞳徑最好是7mm,如市面上常見的7x50,10x70之類的雙筒,不過小潔倒是覺得:太大的光瞳徑反而不太好用,

一大部分的人和小潔一樣有近視,而且年紀大了,瞳孔大概很難張到麼大,其二:常在都市中用7x50的雙筒看東西時,太大的光瞳徑

反而讓視野裡一片明亮,收集光害的能力是太強了些,而且放大倍率太小,看起來總覺得有點不太過癮說,所以小潔寧願

10x5018x70之類的雙筒,不過相對地,你拿雙筒就得穩一點了

[鍍膜(Coating)]

如果是想要選購一雙好的雙筒,其鍍膜也是很重要的,而鏡片釨端端的為什麼要鍍膜咧?其實是為了減少光線的散失(即增加透

光率)當一片未鍍膜的鏡片在光線通過時,會因為反射而有大約4%的光線散失,而如果在鏡片的兩面都鍍上一層薄薄的氯化鎂

MgCl2
其光線的損失率就可以減少到1.5%左右,所看到的影像當然也就明亮得多,也比較不會有炫光的產生, 而適當厚度的

MgCl2
鍍膜是呈現紫色的,如果太厚看起來就是綠色,太薄看起來會有點粉紅色的,而現在各雙筒望遠鏡廠商大部分都有自己的

一套多層鍍膜法,所以妳看到的雙筒望遠鏡鏡片就會有五顏六色啦,至於各家廠商的鍍膜如何還有優劣...這就不是小潔能力所及

的地方啦。不過有一點希望大家注意,大家或許都曾經在路邊攤或廣告裡看過那些看起來很厲害的"紅寶石鍍膜"希望大家不要被

騙啦,這種紅得發亮的鍍膜只會讓影像喪失原有的色調及變暗,反而會造成反效果。WingWing下


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